"Please" and "thank you" are both often referred to as "the magic words," and there are lots of reasons why saying these things is so important. Both terms are polite ways of showing someone that you appreciate something they've done for you.
If you'd like someone to hold the door open for you, saying "Hold the door!" sounds like a rough demand, while saying "Please hold the door" makes the same thing into a polite request! Saying "thank you" does the same thing. If someone helped you look for a lost button or bought you a present, saying "thank you" shows that person that you appreciate the time and thought they have given you in helping to look for the lost button or buying you a present!
Please & thanks, all over the world
"Please" and "thank you" are used in languages and countries all over the world! Do you know how to say either one of these things in another language?
Here are a few you can try...
Spanish: Please = Por favor. Thank you = Gracias
French: Please = S'il vous plait. Thank you = Merci
German: Please = Bitte. Thank you = Danke
Italian: Please = Per favore. Thank you = Grazie
Hebrew: Please = Bevakasha. Thank you = Todah
Zulu: Please = Jabulisa. Thank you = Ngiyabonga